Calorie & Macro Calculator
NewCalculate daily calorie targets for weight loss, maintenance, or muscle gain with macro ratios (Protein, Carbs, Fats)
About Calorie & Macro Calculator
Calorie & Macro Calculator calculates customized daily macronutrient targets—Protein, Carbohydrates, and Fats—in exact grams based on your total daily calorie intake and fitness goals.
Nutrition science demonstrates that while total calorie intake controls body weight changes, macronutrient composition determines whether weight gain or loss comes from body fat or lean muscle mass. Hitting adequate protein targets preserves lean tissue during fat loss phases and drives muscle protein synthesis during bulking phases.
Provides presets for High Protein / Athletic diets, Balanced ratios, and Low Carb / Ketogenic splits, as well as meal-by-meal macro breakdowns for 3, 4, or 5 meals per day.
How to Use Calorie & Macro Calculator
- Enter your target daily calorie intake.
- Choose a diet preset (High Protein, Balanced, Low Carb) or enter custom percentages.
- Review your target daily grams for Protein, Carbohydrates, and Fats.
- Select your daily meal frequency to view per-meal macro guidelines.
Privacy & Data Security
Calorie & Macro Calculator processes all operations 100% locally in your web browser memory. Your files, text snippets, and generated outputs are never stored, logged, or uploaded to any remote server.
Frequently Asked Questions
For active individuals and weightlifters, evidence-based guidelines recommend 0.8 to 1.0 grams of protein per pound of body weight (1.6 to 2.2g per kg).
Protein and Carbohydrates contain 4 calories per gram. Fats contain 9 calories per gram. Our calculator multiplies total calories by your target ratio percentages and divides by these energy density constants.
A High Protein preset (35% Protein, 40% Carbohydrates, 25% Fats) coupled with a slight calorie surplus (+300 to +500 kcal above TDEE) provides optimal amino acids and glycogen for workouts.
Yes, select 'Custom Percentage Split' to adjust sliders for Protein, Carbs, and Fats to match your specific dietary preferences.